Chapter 13, Problem 5E

(a)

Interpretation Introduction

Interpretation: The type of reaction between dopamine and water.

Concept introduction:

Acid-base reaction is a chemical reaction in which acid and base reacts to form salt and water.
Redox reaction is a chemical reaction in which both oxidation and reduction occurs.
Metathesis is a chemical reaction in which two hydrocarbons are converted into two new hydrocarbons by exchange of carbon-carbon single, double and triple bond.

(b)

Interpretation Introduction

Interpretation: The concentration of dopamine in the IV (intravenous fluid) bag.

Concept introduction:
The number of moles is calculated by the formula,
  $\text{Number}\text{of}\text{moles}=\frac{\text{Given}\text{mass}}{\text{Molar}\text{mass}}$

The concentration is given by the formula,
  $\text{Concentration}=\frac{\text{Number}\text{of}\text{moles}}{\text{volume}\left(\text{L}\right)}$

(c)

Interpretation Introduction

Interpretation: The number of molecules of dopamine.

Concept introduction:
The formula for calculating number of molecules is,
$\text{Number}\text{of}\text{molecules}=\text{Number}\text{of}\text{moles}\times \text{Avogadro}\text{number}$